It's made of basic washers. The blast baffle is the same material as the rest of the baffles which means it'll erode at a fast rate. Bad news is they're inexpensive cause they're extremely cheap made. Good thing is that the learning experience is only costing you $400 total, which could've been put towards a quality suppressor that will last you a lifetime. This is why you ask these questions BEFORE you make a purchase. Not trying to be harsh but honest